1. Typing:
- TypeScript: Statically typed. You need to explicitly define the data types of variables and functions. This helps catch errors early in the development process.
- JavaScript: Dynamically typed. Variables don’t require explicit data type definition. This offers flexibility but can lead to runtime errors.
2. Features:
- TypeScript: Adds features like interfaces, classes, generics, and enums on top of JavaScript. These features improve code organization, readability, and maintainability for larger projects.
- JavaScript: Lacks these features but has a vast ecosystem of libraries that can provide similar functionalities.
3. Compilation:
- TypeScript: Needs to be compiled to JavaScript before running in a browser. This compilation step adds another step to the development process.
- JavaScript: Runs directly in the browser without any compilation needed.
4. Choosing Between TypeScript and JavaScript:
- TypeScript: Ideal for large-scale applications, projects requiring strong typing and better tooling support, and teams working collaboratively.
- JavaScript: Preferred for smaller projects, rapid prototyping, or when flexibility and faster turnaround time are priorities.
| Feature | TypeScript | JavaScript |
|---|---|---|
| Typing | Statically typed | Dynamically typed |
| Features | Includes classes, interfaces, generics, enums | Relies on libraries for similar functionalities |
| Compilation | Requires compilation to JavaScript | Runs directly in the browser |
| Use Cases | Large-scale applications, strong typing needed | Smaller projects, rapid prototyping |